APA
London G. W., . (1981). Fourth international colloquium on photon-photon interactions, eng. Singapore: World scientific.
Chicago
London George W, . 1981. Fourth international colloquium on photon-photon interactions, eng. Singapore: World scientific.
Harvard
London G. W., . (1981). Fourth international colloquium on photon-photon interactions, eng. Singapore: World scientific.
MLA
London George W, . Fourth international colloquium on photon-photon interactions, eng. Singapore: World scientific. 1981.